I made a couple floor boards out of plywood and marine plywood. I also had NRS make me a couple small skid guard floors for my cataraft. I never liked securing them with cam straps though. I never could get them tight and secure without a bit of wiggle. The strap slots may not have been spaced right to get the cam straps tightened down enough. I found extra heavy duty zip ties at Home Depot. They are kind of long, but when I wrapped them around twice they were just about right. They were way tighter than the cam straps. My cat floors didn't budge. In three years, I never had one break. The down side is that you can't just take them off like cam straps, you have to cut them off. Up side is that you'll never sit or step on a blazing hot cam buckle on a summer trip.
"We are all visitors to this time, this place. We are just passing through. Our purpose here is to observe, to learn, to grow, to love....and then we return home."
Australian Aboriginal Proverb